3321221231 has 4 divisors (see below), whose sum is σ = 3331255464. Its totient is φ = 3311187000.

The previous prime is 3321221221. The next prime is 3321221243. The reversal of 3321221231 is 1321221233.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3321221231 - 2¹⁰ = 3321220207 is a prime.

It is a super-2 number, since 2×3321221231² = 22061020930490310722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5016620 + ... + 5017281.

It is an arithmetic number, because the mean of its divisors is an integer number (832813866).

Almost surely, 2^3321221231 is an apocalyptic number.

3321221231 is a deficient number, since it is larger than the sum of its proper divisors (10034233).

3321221231 is a wasteful number, since it uses less digits than its factorization.

3321221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10034232.

The product of its digits is 432, while the sum is 20.

The square root of 3321221231 is about 57630.0375759031. The cubic root of 3321221231 is about 1491.9900785361.

Adding to 3321221231 its reverse (1321221233), we get a palindrome (4642442464).

The spelling of 3321221231 in words is "three billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty-one".